Regional drought prevention and disaster reduction evaluation method and device

Abstract

The invention discloses a regional drought prevention and disaster reduction evaluation method and device, and the method comprises the steps: collecting the evaluation indexes of drought prevention and disaster reduction of a preset region, and building a drought prevention and disaster reduction index evaluation system; determining the subjective weight of each level of index in the index evaluation system by adopting an analytic hierarchy process; determining objective weights of all levels of indexes in the index evaluation system by adopting a CRITIC method; respectively endowing each subjective weight and each objective weight with a corresponding first coefficient and a corresponding second coefficient by adopting a golden section method, and calculating to obtain a comprehensive weight corresponding to each level of index; respectively establishing a single-index unascertained measurement matrix and a multi-index unascertained measurement matrix according to the comprehensive weight and an unascertained measurement theory; calculating according to the multi-index unascertained measurement matrix to obtain a comprehensive measurement evaluation result corresponding to each index, and performing confidence identification on the evaluation result; and determining an evaluation result of the drought prevention and disaster reduction capability of each region in the preset region according to the confidence identification result.

Description

technical field [0001] The invention relates to the technical field of disaster assessment, and more particularly, to an assessment method and device for regional drought prevention and disaster reduction. Background technique [0002] With the increasing global warming, the increasing number of extreme disasters caused by climate change has become one of the severe challenges facing mankind in the 21st century. Due to the excessive exploitation of natural resources by human beings, the current ecological environment on the earth has been seriously damaged. China is one of the countries where natural disasters occur frequently in the world, and the losses caused by natural disasters amount to hundreds of billions of yuan every year. Among them, the economic losses caused by drought disasters are more serious. According to records, since the 21st century, the duration of droughts has become longer, the scope of impacts has become larger, and the losses of drought disasters h...

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Problems solved by technology

However, there are few studies on the evaluation of drought prevention and disaster reduction capabilities in arid regions. Therefore, research on drought should focus on the evaluation of drought prevention and disaster reduction capabilities, and then actively respond to the current drought situation, in order to change drought resistance and disaster reduction from passive to active. From a relatively single method to a drought-resistant work

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